Waec Mathematics 1998 Past Questions and Answers

Question 11:

• WAEC 1998

The nth term of a sequence is represented by 3 x 2^(2-n). Write down the first three terms of the sequence

A. ³/₂, 3, 6
B. 6, 3, ³/₂
C. ³/₂, 3, ¹/₃
D. ²/₃, 3, ⁸/₃
E. ³/₂, 0, 6

Question 12:

• WAEC 1998

Find the number whose logarithm to base 10 is 2.6025

A. 0.0004
B. 4.004
C. 40.04
D. 400.4
E. 4004

Question 13:

• WAEC 1998

A piece of cloth was measured as 6.10m. If the actual length of the cloth is 6.35, find the percentage error, correct to 2 decimal places

A. 3.05%
B. 3.95%
C. 15.00%
D. 25.00%
E. 39.30%

Question 14:

• WAEC 1998

Simplify \(\frac{8^{\frac{2}{3}}*27^{\frac{-1}{3}}}{64^{\frac{1}{3}}}\)

A. -3
B. \(\frac{1}{9}\)
C. \(\frac{1}{3}\)
D. \(\frac{27}{8}\)
E. 4

Question 15:

• WAEC 1998

Solve the equation 5x² - 4x - 1 = 0

A. -1, 1/5
B. -1, -1/5
C. 1, 1/5
D. 1, -1/5
E. -1, 5